Xerox 7700DX Service Manual - Page 61

Error Messages, Troubleshooting Error Codes, Chain / Link, Where do they come from?, Why are

Page 61 highlights

Diagnostics, Error Codes and Messages Error Messages The Control Panel displays error codes when it encounters certain system failures or anomalies otherwise undetected by the user. These error codes are discussed in this section. When an error code first occurs, cycle the printer power On to see if the error recurs. ■ For Printer Performance problems, see Troubleshooting on page 3-87. ■ For Print Image Quality problems, see Print Image Quality Problems on page 3-108. Troubleshooting Error Codes Chain / Link Definitions: A chain-link number is always represented as a pair, with the chain first and the link second. Chain: A three digit identifier of a major attribute, counter or assembly. Link: A three digit identifier of a specific component within the major attribute, counter or assembly. Where do they come from? The chain-link encoding structure is used to identify or address a specific component within the printer. The chain points to a high level attribute or counter or component assembly, and the link points to a specific item in that assembly. Why are they here? The printer uses chain-links to enumerate printer faults, and electronically address printer components or operations. Most fatal faults are identified by a number between 10 and 125, but a few faults are identified by the chain-link identifier. Phaser 7700 Color Laser Printer Service Manual 2-31

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Phaser 7700 Color Laser Printer Service Manual
2-31
Diagnostics, Error Codes and
Messages
Error Messages
The Control Panel displays error codes when it encounters certain system
failures or anomalies otherwise undetected by the user. These error codes
are discussed in this section. When an error code first occurs, cycle the
printer power On to see if the error recurs.
For
Printer Performance problems
, see Troubleshooting on
page 3-87.
For
Print
Image Quality problems
, see Print Image Quality
Problems on page 3-108.
Troubleshooting Error Codes
Chain / Link
Definitions: A chain-link number is always represented as a pair, with the
chain first and the link second.
Chain: A three digit identifier of a major attribute, counter or assembly.
Link: A three digit identifier of a specific component within the major attribute,
counter or assembly.
Where do they come from?
The chain-link encoding structure is used to identify or address a specific
component within the printer. The chain points to a high level attribute or
counter or component assembly, and the link points to a specific item in that
assembly.
Why are they here?
The printer uses chain-links to enumerate printer faults, and electronically
address printer components or operations. Most fatal faults are identified by a
number between 10 and 125, but a few faults are identified by the chain-link
identifier.